Blanket warmer



Feb. 21, 1928.

G. E. BLAKE BLANKET WARMER Filed April 18, 1927 INVENTOR. eaonsassuxa.BY m1? +6 ATTYS- Patented Feb. 21, 1928.

- U NITED, s r ATE S GEORGE ERNEST BLAKE, F FORT WILL IAM, ONTARIO,CANADA.

BLANKET WARMER.

Application med April 18, 1927. Serial No. 184,807.

This invention relatesto improvements in blanket warmers and the objectof the invention is to provide a simple, neat and durable device of thisdescription in the form of a heater particularly adapted for heatingblankets and retaining them heated ready for use in ambulances or thelike, so that when a call for an ambulance is received blankets and thelike required will be automatically heated on the way to answer thecall.

A further object is to provide a device of this description for use withambulances, so constructed that the amount of electric current consumedto keep the contents warm will be reduced to a minimum and which ispreferably thermostatically controlled.

With these and other objects hereinafter more fullyreferred to, theinvention comprises a box or container with insulated walls and aninsulated lid and means for supplying an electric current to heat theinterior thereof.

Referring now to the drawings, in which like characters of referenceindicate corresponding parts in each figure,

Figure 1 is a perspective view of the heater.

Figure 2 is a. longitudinal section.

Figure 3 is a. cross section.

Figure 4 is a diagrammatic view of the electric wiring;

Referring more particularly to the drawings, in which a preferredexample. of my invention is disclosed, A designates the container or boxconstituting the warmer as a whole, preferably constructed of metal withinside walls 11 spaced from the outside walls or casing 12 to provide aspace 13 therebetween which may be filled with any suitable insulatedmaterial such as asbestos, cork, mineral woolor the like, as indicatedby the numeral 14.

The lid 15 of the box is hinged at 16 and equipped for carrying by ahandle of flexible material 17 and is adapted to be secured on the boxby stud clips 18.

In the end of the box is a plug 19 connected with the outside and insidecircuits.

For heating the box, I provide a bar member 20 supported on brackets 21adjacent the bottom of the box and bolted into the ends of the box bythe bolts or screws 22 (see Figure 2).

The curved baffle plate 23 (see Figure 3) is supported on legs 24 toclear the element,

while a wire cage or basket 25, adapted to hold the blankets or the like26, is kept clear of the baffle plate by side brackets 27.

In Figure 4 the heating circuit is controlled by a thermostat 28operating a switch 29 and an emergency fuse 30. A suitable cover 30 isprovided to house the thermostat and switch.

The circuit comprises the lead 31, in which is the fuse 30, a lead 32,in which is a thermostat 28 operating the switch 29 comprising thecontact points 33 and 34. The thermostat 28 is affected through theresistance coil 35 in the lead 36 to heating element 20 and the returnwire 37, thereby, causing the contact points to be normally retained inengagement with one another and on a predetermined ten'iperature beingreached to be operated by the thermostat to separate and open thecircuit.

From the foregoing it will be seen that I have provided a handy,inexpensive and eflicinently operating device essentially adapted foruse with hospital ambulances and whereby, without delay and during theactual travel of the vehicle, blankets or the like are heated to apredetermined temperature to be ready on the arrival of the ambulance atits destination for use.

It may also be mentioned that the warmer can be attached to an ordinaryelectric light socket, the same as an electric iron, and in this wayblankets are heated to any temperature desired and are ready in theoffice or anywhere convenient to the ambulance, night or day, so thatwhen a call is received all that is necessary is to pull out the plugand place the warmer in the ambulance. The warmer, being insulated, willretain an even temperature for a considerable time. The automaticoperation of the thermostat will keep the temperature within the casingat a predetermined degree.

As many changes could be made in the above construction, and manyapparently widely different embodiments of my inven-- tion, within thescope of the claims, constructed Without departing from the spirit orscope thereof, it is intended that all matter contained in theaccompanying specification and drawings shall be interpreted asillustrative and not in a limiting sense.

What I claim as my invention is:

1. A blanket warmer for ambulances or the like, comprising a casing, ahinged lid for the casing, an inner casing spaced from the outer'casinginsulating material between the casings, a metal ba'sket suitablysupported within the inner casing, a heating elementibeneath the basketand a baffie plate between the heating element-and the bottom of thebasket, and thereinostat-controlled plate suitably supported in thecasing in spaced relationship above-the heating element, aclothes-carrying basket bracket-supported in the casing in spacedrelationship to the heatinggelement, and means for supplying an electriccurrent totlie heating 'ele ment,fand thermostatic control forsaidcurrent whereby, on a predetermined tempera- T ture being reachedWithin the casing; the

circuit is automatically opened. 7

In y vitne ss whereof I' haye hereunto set my hand. V a

' GEORGE ERNEST LAK

